[41]Miyake F., Jull A.J.T., Panyushkina I.P., Wacker L., Salzer M., Baisan C., Lange T., Cruz R., Masuda K., Nakamura T. 2017. Large 14C excursion in 5480 BC indicates an abnormal sun in the mid-Holocene. PNAS Physical Sciences - Earth, Atmospheric, and Planetary Sciences 114 (3), doi:10.1073/pnas.161314411